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authorYuwei Guan <ssawgyw@gmail.com>2022-11-10 19:26:22 +0800
committerJens Axboe <axboe@kernel.dk>2022-12-15 05:11:59 -0700
commit1eb206208b0f3f707c67134ef6ba394410effb67 (patch)
treec1ac018cff90358e13b3db7fae4c65b0f7deed6d /block
parent813e693023ba10da9e75067780f8378465bf27cc (diff)
block, bfq: only do counting of pending-request for BFQ_GROUP_IOSCHED
The 'bfqd->num_groups_with_pending_reqs' is used when CONFIG_BFQ_GROUP_IOSCHED is enabled, so let the variables and processes take effect when CONFIG_BFQ_GROUP_IOSCHED is enabled. Cc: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Yuwei Guan <Yuwei.Guan@zeekrlife.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Yu Kuai <yukuai3@huawei.com> Link: https://lore.kernel.org/r/20221110112622.389332-1-Yuwei.Guan@zeekrlife.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/bfq-iosched.c2
-rw-r--r--block/bfq-iosched.h4
-rw-r--r--block/bfq-wf2q.c8
3 files changed, 10 insertions, 4 deletions
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index dc576b90ddfe..16f43bbc575a 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -7063,7 +7063,9 @@ static int bfq_init_queue(struct request_queue *q, struct elevator_type *e)
bfqd->idle_slice_timer.function = bfq_idle_slice_timer;
bfqd->queue_weights_tree = RB_ROOT_CACHED;
+#ifdef CONFIG_BFQ_GROUP_IOSCHED
bfqd->num_groups_with_pending_reqs = 0;
+#endif
INIT_LIST_HEAD(&bfqd->active_list);
INIT_LIST_HEAD(&bfqd->idle_list);
diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h
index 9fa89577322d..41aa151ccc22 100644
--- a/block/bfq-iosched.h
+++ b/block/bfq-iosched.h
@@ -197,8 +197,10 @@ struct bfq_entity {
/* flag, set to request a weight, ioprio or ioprio_class change */
int prio_changed;
+#ifdef CONFIG_BFQ_GROUP_IOSCHED
/* flag, set if the entity is counted in groups_with_pending_reqs */
bool in_groups_with_pending_reqs;
+#endif
/* last child queue of entity created (for non-leaf entities) */
struct bfq_queue *last_bfqq_created;
@@ -491,6 +493,7 @@ struct bfq_data {
*/
struct rb_root_cached queue_weights_tree;
+#ifdef CONFIG_BFQ_GROUP_IOSCHED
/*
* Number of groups with at least one process that
* has at least one request waiting for completion. Note that
@@ -538,6 +541,7 @@ struct bfq_data {
* with no request waiting for completion.
*/
unsigned int num_groups_with_pending_reqs;
+#endif
/*
* Per-class (RT, BE, IDLE) number of bfq_queues containing
diff --git a/block/bfq-wf2q.c b/block/bfq-wf2q.c
index b02b53658ed4..ea4c3d757fdd 100644
--- a/block/bfq-wf2q.c
+++ b/block/bfq-wf2q.c
@@ -1612,28 +1612,28 @@ void bfq_requeue_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq,
void bfq_add_bfqq_in_groups_with_pending_reqs(struct bfq_queue *bfqq)
{
+#ifdef CONFIG_BFQ_GROUP_IOSCHED
struct bfq_entity *entity = &bfqq->entity;
if (!entity->in_groups_with_pending_reqs) {
entity->in_groups_with_pending_reqs = true;
-#ifdef CONFIG_BFQ_GROUP_IOSCHED
if (!(bfqq_group(bfqq)->num_queues_with_pending_reqs++))
bfqq->bfqd->num_groups_with_pending_reqs++;
-#endif
}
+#endif
}
void bfq_del_bfqq_in_groups_with_pending_reqs(struct bfq_queue *bfqq)
{
+#ifdef CONFIG_BFQ_GROUP_IOSCHED
struct bfq_entity *entity = &bfqq->entity;
if (entity->in_groups_with_pending_reqs) {
entity->in_groups_with_pending_reqs = false;
-#ifdef CONFIG_BFQ_GROUP_IOSCHED
if (!(--bfqq_group(bfqq)->num_queues_with_pending_reqs))
bfqq->bfqd->num_groups_with_pending_reqs--;
-#endif
}
+#endif
}
/*